Grain-dump lifting-jack.



PATBNTED NOV. 15, 1906.

` R.L.1RHEA. GRAIN DUMP LIFTING JACK.

APPLIOAION FILED JUNE 18, 1906.

2 SHEETS-SHEET 1,

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- PATENTED NOV. 13,' 1906.

R. L. R-HBA. GRAIN DUMP LIFTING JACK. APPLIGATION FILIBD JUNE 18, 1906.

2 SHEETS-SHEET 2.

33 j l Ez-T a l fr? 7 UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Nov. 13, 1906.

Application filed June 18, 1906. Serial No. 322,172.

T0 a/ZZ w/wm t may concern:

Be it known that I, ROBERT L. RHEA, a citizen of the United States,residing at Peoria, in the county of Peoria and State of Illinois, haveinvented certain new and useful Improvements in Grain Dump Lifting-Jacks; and I do hereby declare that the following is a full, clear, andeXact description of the invention, which will enable others skilled inthe art to which it appertains t0 make and use the same.

This invention has reference to certain new and useful improvements ingraindumps, commonly known as wagon-jacks, and relates particularly tothat character of jack employed on farms to assist in unloading corn orother material from a vehicle into a receiving conveyer or elevator,which elevates the same to a car, crib, or other receptacle, it beingdesigned to receive the front wheels of the wagon and elevate the sameto a suitable height for the purpose of inclining the bed of the wagon,so that if the end-gate is removed the material will be graduallydischarged as the wagon-bed is inclined, discharging the material intothe conveyer or elevator or other suitable receiving means for thepurpose of elevating the material, as described.

One of the objects of the present invention is the provision of meansfor automatically checking the raising and lowering means of the ackwhen the same is elevated to a predetermined height or when lowered,said means being adjustable for the purpose of regulating the height atwhich the 'elevating means for the wagon may be checked.

A further object of the invention is a guiding and sustaining means forthe support which receives the front wheels of the wagon and elevatesthe same, the same being designed to prevent the support from beingcramped when elevated or lowered.

For a further and full description of the invention herein and themerits thereof, and also to acquire a knowledge of the details ofconstruction of the means for eecting the result, reference is had tothe following description and drawings hereto attached.

I/Vhile the essential and characteristic features of the invention aresusceptible of modification, still the preferred embodiment of theinvention is illustrated in the accompanying drawings, in which- Figurel is an end elevation of the jack, showing the mechanism which isadapted to port for raising and lowering the same.

raise and lower the support for the front end of the wagon, the supportbeing shown elevated to a suitable height. Fig. 2 is a side elevationshowing in detail only a portion of the support and one of the uprightsof the jack, together with one of the guiding and sustaining means forthe support. Fig. 3 is a sectional detail of the gearing fortransmitting motion in opposite directions to a drumshaft employed inconnection with the sup- Fi 4 is a sectional view on the line y y ofFiggl and only showing one portion of the framework of the jack. Fig. 5is a face view of a portion of a lever and connecting-rod for shiftingcertain clutch parts, and in connection therewith parts of the mechanismfor automatically throwing the lever to check the movement of the ack.Figs. 6 and 7 show a side and edge view of certain parts of the checkingmechanism. Figs. 8 and 9 show a side and edge view of certain otherparts of the checking mechanism. Fig. 10 is a view somewhat similar toFig. 5, but showing the manner of adjusting the checking mechanism tofacilitate in stopping the upward rhovement of the jack at differentpositions; and Figs. ll and l2 show side and edge views of the lowerportion of the lever seen inFig. 5.

Like numerals of reference indicate corresponding parts throughout thefigures.

A wagon jack or dump when constructed -'with a platform serving as asupport for the front wheels of a wagon comprises usually a bed withapproaches from opposite sides and standards at its opposite ends,between which the platform is arranged and is adapted to be raised andlowered, the platform having connected therewith elevating means, suchas chains or cables adapted to be wound around drums on a drum-shaft.The present device is constructed along these lines; but in the drawingsit has been thought only necessary to show that end of the jack or dumpwhich carries the support for gearing and trip mechanism for elevatingand lowering the platform and checking the movement thereof, it beingunderstood that the bed and platform' are of suitable width to receivethe front end of the wagon, and that standards, such as is shown in Fig.1, are duplicated upon the opposite end of the machine, this being alsotrue of the platform, the opposite end being substantially a duplicateof that also shown in Fig. 1.

In the drawings the bed of the jack or IOO IIO

dump is indicated as 1 provided with the approaches 2 at the oppositesides thereof. The bed may consist of end and cross braces, as may bedesired, and the approaches may be such as illustrated in the drawingsor modied as desired, such as connecting a short platform thereto.Extending up from the opposite ends of the bed are two uprights 3, whichare spaced suitably apart, as shown in Fig. 1, and of suitable width andheight. As was intimated, only one end of the jack is shown, hence thestandard consisting of the two uprights 3 is only shown, the other endbeing omitted. The upper ends of the uprights 3 are connected by thecross-brace 4, supporting the bracket 5, between the arms of which isjournaled a sheave-wheel 6, over which is designed to be carried a chainor cable 7, the object of which will be more fully explained. Theplatform, which is best seen in Figs. 1 and 2, comprises sills 8, whichare suitably spaced apart and which are connected at their voppositeends by the cross-brace 9. The platform is carried between the standardscomprising the uprights 3 at the opposite ends of the jack and is ofsuitable width, so that the front wheels of a wagon when run onto thejack will be carried between the braces 9 and raised between and on thesills 8. The platform when in its lowermost position is such that thetops of the sills 8 are on a level with the inner upper edges of theapproaches 2 to facilitate in running the front wheels of a wagon to theplatform.

I have provided for guiding and sustaining the platform as it is raisedand lowered, so as to prevent cramping, and to do this I have providedthe castings 10, which are attached or secured to the opposite ends ofthe braces 9, and in the upper and lower ends of said brackets orcastings I have journaled the rollers 11, which are adapted to run upand down on the outer faces of the uprights 3, as shown in Figs. 1 and2. By this means it will be seen that the platform is sustained in oneposition between the standards as it is raised and lowered, and crampingis prevented by guiding the platform through the rollers which engagewith the uprights, as specified.

12 denotes what will be hereinafter known as the drum-shaft,7 the samepassing longitudinally through the bed of the jack and journaled insuitable bearings secured to the opposite sides thereof. To the bed ofthe jack at that end of the machine shown in Figs. 1 and 4 the shaft 12is preferably journaled in a bracket, which is indicated as 13 and whichis preferably secured to the bed in the manner shown and is providedwith the tubular portion 16, which serves as a bearing for the saidshaft, and on the shaft 12 are secured what are known as the drums 14,preferably located adjacent to the inner ends of the tubular portion 16of the brackets 13 in which the shaft 12 is journaled. It is intendedthat as the parts of the jack are duplicated at its opposite ends, soare there provided two of the d rums 14, to which may be secured one endof chains or cables 7, which are adapted to be wound on the drums whenit is intended to elevate the platform, the chains or cables passingupwardly and over the sheave-wheels 6 and have their opposite endssecured to the braces9 of the platform, as shown in Fig. 2. The bracket13 just referred to is further provided with the upwardly and forwardlycarried arms or eXtensions 17, forming a bearing for the opposite endsof a clutch-shaft 18, which passes through the extensions 17 of thebracket and is provided with the squared ends 19 to facilitate inconnecting with either end of the clutch-shaft a power-shaft, such as atumbling-rod or equivalent means, to facilitate in operating the saidshaft from a horse-power or some other suitable means.

On the clutch-shaft 18 are arranged a mitergear 2O and a bevel-pinion21, the latter being in continuous mesh with the bevel-gear 22, carriedon a short vertical shaft 23, journaled in a bearing formed by thebosses 24, preferably integral with the bracket 15, while the miter-gear2O is in mesh with the miter-gear 25, carried on the shaft 23 and seatedwithin the bevel-pinion 22, although the miter-gear 25 may be integralwith and form a part of the gear 22. The miter-gear 2O and thebevelpinion 21 are preferably arranged loose on the clutch-shaft 18 andare each provided with the clutch-faces 26 and 27, adapted to have anintermittent connection with clutchfaces 28 and 29 of a sleeve 30,preferably feathered on the shaft 18 and connected with means adapted toslide the same on the shaft for the purpose of connecting it with eitherthe miter-gear 2O or the bevel-pinion 21. The means just referred toconsists of a rod 31, (best seen in cross-section in Fig. 4,) which ispreferably provided with the usual yoke portion which engages an annulargroove 32 on the sleeve 30 to facilitate in sliding the sleeve on theshaft. This particular construction a common mode of connecting aslidable clutch part with the shifting-rod. The rod has not beenillustrated, as it is- IOO IIC

IIS

31 at its outer end is adapted to have connection with the lever 33,preferably through a block 34, attached to the rod 31, which is providedwith a stud 35, working in aslot 36 in the lever 33. It will thus beseen that when the lever 33 is shifted a corresponding movement will beimparted to the sleeve 30 on the shaft 18 through the rod 31, asspecified.

37 denotes a gear-wheel, which may be a worm-wheel, if it is desired,which is attached to and carried upon the outer end of the drum-shaft12, which projects out through the bearing 16 in the bracket 13, thegear 37 being preferably provided with an elongated hub portion 38,which places the body of the gear 37 a suitable distance from thebearing 16 of the bracket, and carried on the hub 38 of the gear 37adjacent to the bracket 13 is shown the lever 33 in such a manner astoadapt the lever to have an oscillatory movement on the hub 38 aforesaid.One means of oscillating the lever 33 is through the rod 39, which ispreferably connected with the upper end of the lever 33 in the mannerseen in Fig. 1; The rod 39 may extend in either direction from the jackto be within easy reach of an operator, so as to enable him to controlthe upward and downward movement of the platform whenever he may sodesire.

For operating the drum-shaft 12 through the gear 37 I have provided aworm-pinion 40, which is carried on the shaft 23 preferably in themanner seen in Fig. 1 and meshes with the gear 37. The rotation of thegear 37 and the shaft 12, on which it is carried, is governed throughthe connection of the sleeve 30 with the miter-gear 20 and bevel-pinion21, all of which, it is believed, will be understood. It is intendedthat the platform shall be raised very slowly to facilitate in graduallydischarging material from a wagon and that upon the discharge of thematerial the wagon may be lowered very rapidly. To

' raise the plaform, I preferably employ the bevel-pinion 21 andbevel-gear 22, in which event the sleeve will be connected with thebevel-pinion 21 but when lowering the platform I preferably employ themiter-gears 2O and 25, in which event the sleeve 30 will be connectedwith the, miter-gear 20, all of which, it is believed, will beunderstood.

I will now describe the means which I employ in connection with theraising and lowering mechanism for checking the movement of the samewhen the platform has reached a predetermined height or when lowered. 41denotes a disk provided with a series of notches 42, which arepreferably arranged in a circumferential row around the edge of the saiddisk.. The disk 41 is carried on the hub 38 of the gear 37 and isadapted to be locked in a fixed relation with the gear by means of a pin43, which is passed through one of the notches 42 in the disk andthrough a slot 44 in the gear 37 and retained in such position by meansof a nut 45 engaging a threaded end of the pin .43, as best seen in Fig.4. Also carried on the hub 38 of the gear 37 is a series of annularrings or plates, which I have indicated as 46, 47, and 48, the samelying in juxtaposition to each other and between the inner face of thedisk 41 and the outer face of the lever 33, as shown in Fig. 4. Therings or plates 46 and 47 are substantially as those shown in Figs. 8and 9 of the drawings, and the ring 48 is substantially as that shown inFigs. 6 and 7 of the drawings, the

'only difference being that the ring or plate 48 is provided with thetooth or ear 49, as shown. It is also observed that that portion of thelever 33 which is carried on the hub 38 of the gear 37is substantiallyin the form of the rings or plates 46 and 47. (See Figs. 11 and 12,)

The disk 41 is provided with the tapered offset or boss 50, and likewisethe rings or plates 46, 47 and 48 are provided with similar offsets orbosses, which I have indicated as 46a and 48a. ring or sleeve 47 is notshown in the drawngs; Abut it is understood that such a one as isprovided on the ring 46 is also provided on the ring 47. The rings 46,47, and 48 and the corresponding portion of the lever 33 are providedwith the annular cut-out portions 46h, 47h, 48h, and 33a, with theexception of the tapered offsets or shoulders 48c on the ring 48, 46c onthe ring 46, and 33b on the lever 33, which in all respects correspondto the offsets 48a and 46a on the corresponding rings and are preferablyarranged in the rear of the offsets just referred to to coincidetherewith, it being understood that the ring or plate 47 is providedwith an offset to correspond to the offset 46C of the ring or plate 46,and while the lever 33 is provided with an offset 33h, corresponding tothe offset 46C in the ring 46, it is not provided with the offset' orboss similar to that indicated as 46a on the ring 46.

In assembling the rings 46, 47, and 48 on the hub 38 of the gear 37 in amanner seen in Fig. 4 the offset or boss 5() of the disk 41 is seated inthe annular cut-out portion 46b of the ring 46 and alongside of andengaging the offset 46C. The boss 46l on the back of the ring 46 has thesame relation with the ring 47 and the offset therein correspondingly tothe ofset 46C. This is also true of the boss of The boss or offset onthe IOO the ring 47, which corresponds to the boss 46a of the ring 46,which has the same relation with the ring 48 and the offset 48C, whilethe boss 48";L of the ring 48 is correspondingly seated in the annularcut-out portion 33a of the lever 33 and is seated alongside of andengages with the offset 33b in the lever. It is intended that as thedrum-shaft 12 is rotated for elevating the. platform the disk 41 willmake nearly a complete revolution until its boss 50, which moves awayfrom one side of the offset 46C of the ring 46, engages with theopposite side of the said offset 46C, and the ring 46, as will beunderstood will also make nearly a complete revolu-v tion, when its boss46a will engage with the offset in the ring 47 corresponding to theoffset 46c in the ring 46, which will then set the ring 47 into motion,and the boss thereof corresponding to the boss 46a on the ring 46 whenit engages with the offset 48c of the ring 48 will in turn cause thering 48 to be rotated until the boss 48a thereof comes around IIO andengages with the offset 33h, which will impart a partial rotation to thelever 33 until the lever is oscillated into a position which will causethe rod 31 to shift sufficiently to disengage the sleeve 30 from thebevel-pinion 21 when the gear will be disconnected from the clutch-shaft18, and thereby check the upward movement of the platform. Theoperatorto reverse the movement of the drumshaft will shift the rod 39so as to cause the sleeve 30 to engage with the miter-gear 20, when thedrum-shaft will be rotated in an opposite direction, reversing themovement of the gear 37 and the disk 41, which will operate on the ring46 just opposite to that above described, and the rings 46, 47, and 48will each operate in a reverse direction successively and again shiftthe lever 33, but in an opposite direction to that above described, foragain checking the movement of the gearing and the platform, which bythis time has reached its lowermost position.

I have provided in connection with the mechanism for checking the upwardmovement of the platform an adjustable means, so as to regulate theheight at which the platform may be stopped-that is, the platformordinarily would rise to a position and not be ,checked until the boss48a on the ring 48 engaged with the offset 33b in the lever 33; but themeans I have just made mention of is employed for the purpose of makingprovision for the checking or stopping of the platform at various pointsbetween its lowermost position and its highest position. This meansconsists of a plate 51, which is adjustably carried by the lever 33somewhat in the manner shown in Figs. 4, 5, and 10. The said plate isprovided with an elongated slot 52 to enable the said plate to beadjustably secured to the lever 33 by means of the bolt or pin 53, andthe said plate is provided with an offset or stop portion, (indicated as54,) which is adapted to be engaged by the tooth or ear 49 on the ring48. In the position shown in Fig. 5 the plate 51 is so adjusted that thetooth or ear 49 will not engage with the offset 54 of the plate, whichenables the boss 48aL of the ring 48 to engage with the offset 33b ofthe lever 33 to insure the latter being oscillated to disconnect thegearing from the clutch-shaft 1S; but in Fig. 10 it will be seen thatthe plate 51 has been adjusted so as to insure the tooth or ear 49 ofthe ring.48 engaging with the offset 54 of the plate 51, and it isthrough such engagement that the lever 33 is oscillated fordisconnecting the gearing from the clutch-shaft instead of relying onthe boss 48@L engaging with the offset 33b on the lever 33 foraccomplishing this result. It will be seen from an examination of Figs.5 and 10 that the plate 51 has a very wide range of adjustment to enablethe disconnecting of the gearing, so as to check the upward movement ofthe platform at different heights, all of which, it is believed, will beunderstood.

Constructing the disk 41 as I have with a series of notches 42 arrangedaround its edge is for the purpose of adjusting the said disk on the hubof the gear 37 and to provide for its connection when so adjusted to thesaid gear. By releasing the nut 45 on the pin 43 the pin may be raisedin theslot 44 of the gear 37, which will release it from the notch inthe disk 41 and adapt the disk to be adjusted on the hub of the gear.The purpose of adjusting the disk is to provide for taking up any slackin the chain or cable 7 which might occur through the stretching of thechain or cable in the continuous operation of the device, so that whenthe platform was lowered to its normal position the chain or cable mightbecome displaced; but by adjusting the disk 41 on the gear 37 any suchslack in the chain or cable might be taken care of, so that the platformwould always lower to such a position so as to keep the chain or cabletaut; all of which, it is believed, will be understood.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent of the United States, is-

1. In a grain-dump lifting-jack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, gearing for actuating thedrum-shaft, and a plurality of revolubly-arranged rings coperating withthe said gearing for checking the movement of the same.

2. In a grain-dump lifting-j ack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, gearing for actuating thedrum-shaft, and a plurality of rings revolubly carried on the drum-shaftand cooperating w th said gearing for checking the movement of the same.

3. In a grain-dump lifting-jack, the combination with the base andstandards thereof, an elevating device, for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, gearing for actuating thedrum-shaft, and a plurality of successively rotatably operated memberscooperating with said gearing fcr checking the movement of the same.

4. In a grain-dump lifting-j ack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, gearing for actuating thedrum-shaft, and a plurality of successively rotatably operated membersIOO carried on the drum-shaft and cooperating with said gearing forchecking the movement of the same.

5. In a grain-dump lifting-jack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, a gear on one end of thedrum-shaft, mechanism for actuating said gear and thereby the shaft, anda plurality of rings in operative connection with said gear andcooperating with the mechanism last aforesaid for checking the movementof the same. i

6. In a grain-dump lifting-jack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, a gear on one end of thedrum-shaft, mechanism for actuating said gear yand thereby the shaft,and a plurality of successively-operated rings in operative connectionwith said gear and cooperating with the mechanism last aforesaid forchecking the movement of the same.

7. In a grain-dump lifting-j ack, the combination with thel base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, gear on one end of thedrum-shaft having an elongated hub portion, mechanism for actuating thesaid gear and thereby the shaft, and a plurality ofsuccessively-operated rings carried on the hub of the gear and inoperative connection therewith, said rings cooperating with themechanism last aforesaid for checking the movement of the same.

8. In a grain-dump llifting-jack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, a gear on one end of thedrum-shaft, mechanism for actuating the said gear and thereby the shaft,a lever capable of being manually operated in connection with suchmechanism, and a plurality of rings in operative connection with saidgear and cooperating with said lever, whereby the lever is automaticallyoperated at predetermined intervals for checking the movement of themechanism aforesaid.

9. In a grain-dump lifting-jack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, a gear on one end of thedrum-shaft having an elongated hub portion, mechanism for acutating thesaid gear and thereby theshaft, a lever capable of being manuallyoperated swingably carried on the hub of said gear and in operativeconnection with the mechanism aforesaid, and a plurality of ringsarranged in juxtaposition on the hub of the gear between the body of thesame and said lever and cooperating therewith, whereby the lever isautomatically operated at predetermined intervals for checking themovement of the gearactuating mechanism.

10. In a grain-dump lifting-jack, the combination with the base andstandards thereof, an elevating device for the front end of a wagonmovable vertically between the standards, a drum-shaft, connectionsbetween the drum-shaft and elevating device, a gear on one end of thedrum-shaft having an elongated hub portion, mechanism for actuating thesaid gear and thereby the shaft, a lever capable of being manuallyoperated swingably carried on the hub of said gear and in operativeconnection with the mechanism aforesaid, and a plurality of successivelyrotatably operated members arranged in juX- taposition on the hub ofthegearbetween the s body thereof and said lever and coperating with bothsaid gear and lever, whereby the lever is automatically operated atpredetermined intervals for checking the movement of the gear-actuatingmechanism.

11. In raising and lowering mechanism, a drum-shaft, a gear carried onone end of the said shaft, mechanism for actuating said gear and therebythe shaft, a plurality of successively rotatably operated membersarranged on the drum-shaft and operatively connected with each other andthe said gear, and connections between one of'said members and saidgear-actuating mechanism adapted to be automatically actuated by theactuation of said .gear for checking the gear-actuating mechanismaforesaid.

12. In raising and lowering mechanism, a `drum-shaft, a gear carried onone end of said shaft, clutch-controlled mechanism for actuating thegear and thereby the shaft, a series of axially-arranged cooperatingmembers adapted to be successively actuated by the gear on thedrum-shaft, and means operated by one of said members for automatically:checking the clutch-controlled mechanism aforesaid.

13. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front :end of a wagon, mechanism for raising andlow-,ering said device, a series of axially-arranged coperating membersassociated with said raising and lowering mechanism, and adapted to besuccessively operated thereby, and `means operated by one of saidmembersfor automatically checking said raising and lowering mechanism.

14. In a grain-dump lifting-jack, the combination with an elevatingdevice for the IOO .arranged rotatable members front end of a wagon,mechanism for raising and lowering said device, a series ofaxiallyarranged rotatable members associated with said raising andlowering mechanism, and adapted to be successively operated thereby, andmeans operated by one of said members for automatically checking saidraising and lowering mechanism.

15. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end oi a wagon, mechanism for raising and loweringsaid device, a series of axiallyarranged cooperating members associatedwith said raising and lowering mechanism, and adapted to be successivelyoperated thereby, ment with said members and adapted to be operated byone of them for automatically checking said raising and loweringmechanism.

16. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end of a wagon, mechanism for raising and loweringsaid device, a series of axiallyhaving interengaging parts associatedwith said raising and lowering mechanism, and adapted to be successivelyoperated thereby, and means operated by one of said members `forautomatyically checking said raising and lowering mechanism.

17 In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end of a wagon, mechanism for raising and loweringsaid device, a series of axiallyarranged intermittently-revoluble plateshaving interengaging parts associated with said raising and loweringmechanism and adapted to be operated thereby, and means operated by oneof said plates 'for automatically checking said raising and loweringmechanism.

18. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end oi' a wagon, mechanism for raising and loweringsaid device, a series of axiallyarranged rotatable members havinginterengaging parts, associated with said raising and loweringmechanism, and adapted to be successively operated thereby, and meansarranged in axial alinement with said members and adapted to be operatedby one oi them for automatically checking said raising and loweringmechanism.

19. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end of a wagon, mechanism Jfor raising and loweringsaid device, a series of axiallyarranged intermittently revoluble plateshaving interengaging parts associated with said raising and loweringmechanism, and adapted to be operated thereby, and means arranged inaxial alinementv with said plates and adapted to be operated by one ofthem for automatically checking said raising and lowering mechanism.

and means arranged in axial alinef 20. In a grain-dump lifting-jack, thecombination with an elevating device for the iront end of a wagon,mechanism for raising and lowering said device, a series ofaxiallyarranged intermittently-revoluble plates having interengagingparts associated with said raising and lowering mechanism, and adaptedto be successively operated thereby, and a lever arranged in axialalinement with said plates and operatively connected therewith and withthe raising and lowering mechanism, said lever being adapted to beautomatically actuated at predetermined intervals for checking themovement of said raising` and lowering mechanism.

21. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end of a wagon, a drum-shaft and connectionsbetween the same and said device, a gear on one end of the drum-shaft,clutchcontrolled mechanism for actuating said gear, a series ofintermittently and successively actuated members operatively connectedwith the gear, and means interposed between the clutch-controlledmechanism and the last member oi the series aforesaid adapted to beactuated thereby at predetermined intervals for controlling the movementof said clutch-controlled mechanism.

22. In combination with an elevating device, a drum-shaft andconnections between the same and said device, clutch-controlled Ymechanism for actuating said shaft, a series of intermittently andsuccessively actuated members, means for operating such members fromAthe mechanism aforesaid, and means actuated by said members forgoverning the movement of said clutch-controlled mechanism.

23. In combination with an elevating device ior the front end of awagon, clutch-controlled mechanism operatively connected with saidelevating device, a series of axiallydisposed and intermittently andsuccessively actuated members operatively connected with said mechanismand an oscillatory part adapted to be operated at predeterminedintervals by one oi' said members for governing the movement of saidclutch-controlled mechanism.

24. In combination with an elevating device ior the front end of awagon, a drumshait and connections between the same and said device, agear carried on one end of said shaft and having an elongated hub,mechanism Jfor intermittently actuating said gear, a series of revolublemembers arranged in juxtaposition on the hub of the gear havinginterengaging parts and in operative connection with said gear, a leveradapted tobe actuated by one of said chambers at predeterminedintervals, and connections between the said lever and the gear-actuatingmechanism aforesaid. l

25. In combination with an elevating de- IOO TIO

vice for the front end of a wagon, a drum- I gear-actuating mechanism, adisk connected shaft and connections between the same and said device, agear on one end of the shaft, a series of axially-arranged membershaving interengaging parts, means for operating the first member of theseries from the gear and thereafter in succession all of said members,clutch-controlled mechanism for actuating said gear, and intermediatemeans adapted to be automatically actuated by the last member of theseries for` governing said clutch-controlled mechanism.

26. In combination with an elevating device for the front end of awagon, a drumshaft and connections between the same and said device,mechanism for actuating the drum-shaft, a series of aXially-disposed andintermittentlyeoperated controlling members in operative connection withsaid mechanism, and means adjustably carried by one of said members tofacilitate in controlling the said drum-actuating mechanism forgoverning the checking of said elevating device.

27. In combination with an elevating device for the front end of awagon, a drumshaft and connections between the same and said device, agear carried on one end of said shaft, a series ofintermittentlyactuated members also carried by said shaft, means forsuccessively operating each of said members from said gear, mechanism inoperative connection with said gear for actuating the same and therebythe shaft, a clutch part for controlling the direction of movement ofsaid gear-actuating mechanism, and a lever connected with said clutchpart and adapted to be automatically actuated by one of said members forgoverning the movement of said clutch part.

28. In combination with an elevating device for the front end of awagon, a drumshaft and connections between the same and said device,a'gear carried on one end of said shaft, a series ofintermittentlyeactuated members also carried by said shaft, means forsuccessively operating each of the said members from said gear,mechanism in operati ve connection with said gear for actuating the sameand thereby the shaft, a clutch part for controlling the direction of movement of said gear-actuating mechanism, a lever connected with saidclutch part and adapted to be automatically actuated by one of saidmembers for governing the movement of said clutch part, and meansadjustably connected with said lever whereby the time of operation ofsaid lever may be regulated with respect to the mo vement of the memberfor actuating the same.

29. In combination with an elevating device for the front end of awagon, a drumshaft and connections between the same and said device, agear on one end of the shaft, mechanism for actuating said gear, aclutch part for controlling the movement of said with said gear, aseries of successively-rotatable parts in axial alinement with saiddisk, means for operating each of said parts during the continuedrotation of said gear and disk, a le ver, adjustable connections betweensaid lever and one of said parts for go verning the movement of thelever, and connections between said le ver and clutch part aforesaid.

30. In an apparatus of the class specified, the combination with adrum-shaft, of a gear carried on one end thereof, mechanism foractuatingsaid gear, a clutch part for controlling the direction ofmovement of such mechanism, a lever carried on the drum-shaft,connections between the lever and clutch part, and a series ofinterposed members between the lever and gear aforesaid, the same beingin operative connect-ion with each other, the lever and said gear,adapted to be successively operated. v

31. In an apparatus of the class specified, the combination with adrum-shaft, of a gear carried on one end thereof and having an elongatedhub, mechanism for actuating said gear, a clutch part for controllingthe direction of movement of such mechanism, a lever fulcrumed on thehub of said gear, connections between the lever and clutch part, and aseries of coperating members disposed in axial alinement on the hub ofthe gear between the lever and said gear and operatively connected withthe same, and adapted to be successively operated.

32. In an apparatus of the class specied, the combination with adrum-shaft, of a gear carried on one end thereof and having an elongatedhub, clutch-controlled mechanism for actuating the gear, a leverfulcrumed on the hub of the gear, connections between the lever andmechanism aforesaid, a series of interengaging parts arranged on the hubof the gear between the lever and gear and adapted to be successivelyactuated during the actuation of the gear, means for operating the leverfrom one of said members, and means ad justably attached to said leveradapted to be actuated by said last-mentioned member to facilitate inchanging the time of operation of the lever.

33. In an apparatus of the class specified, the combination of a shaft,a gear carried on one end thereof and having an elongated hub, a leverfulcrumed on said hub, interposed means also carried by said hub foroperating the lever at predetermined intervals from said gear and duringthe operation thereof, and mechanism for actuating said gear.

34. In an apparatus of the class specified, the combination with ashaft, a gear carried on one end thereof, having an elongated hub, alever fulcrumed on said hub, a disk adjustablyl carried on the hub ofsaid gear, means interposed between said disk and lever for operatingthe lever at predetermined intervals from said disk and during theoperation of said gear, and mechanism for actuating the gear.

35. ln an apparatus of the class specified, the combination. with ashaft, a gear carried on one end thereof, a disk attached to said gear,a series of revoluble members arranged in juxtaposition to each otherand with said disk, means carried by said disk and each of said membersto facilitate in successively operating the members from said diskduring the continued rotation of the gear, a lever, means for operatingsaid lever from the last member of the series at a predetermined pointin its revolution, a plate adjustably connected with said lever, meanscarried by said. last-mentioned member to cooperate with the plate ofthe lever to facilitate in changing the time of the operation of thelever, clutchcontrolled mechanism for actuating the gear, andconnections between the lever and such mechanism.

86. In anvapparatus of the class specified, the combination of a shaft,a gear carried on one end thereof, a disk attached to said gear, a leverfulcrumed in axial alinement withthe gear and spaced apart therefrom, aseries of suocessively-operated members interposed between the disk andlever, cooperatingA lugs between the disk and one of said members,between each of said members and between one of said members and thelever, clutch-controll ed mechanismfor actu ating the gear, andconnections between the lever and such mechanism.

37. In an apparatus of the class specified, the combination of a shaft,a gear carried on one end thereof, a disk attached to said gear, a leverfulcrumed in axial alinement with the gear and spaced apart therefrom, aseries of successively-operated members interposed between the disk andlever, cooperating lugs between the disk and one of said members andbetween each of the members aforesaid, a tooth projecting from one ofsaid members, a plate adjustably attached to said lever and having anengaging part adapted to lie in the path of movement of the tooth of themember aforesaid, clutch-controlled mechanism for actuating the gear,and connections between the lever and such mechanism.

38. ln an apparatus of the class specified, the combination of a shaft,a gear carried on one end thereof, a disk attached to said gear, a leverfulcrumed in axial alinement with the gear and spaced apart therefrom, aseries of successively-operated members interposed between the disk andlever, cooperating lugs between the disk and one of said members,between each of said members and between one of said members and thelever, a tooth projecting from the member cooperating with the ever, aplate adjustably attached to said lever and having an engaging partadapted to lie in the path of movement of the tooth of the memberaforesaid, clutch-con trolled mechanism for actuating the gear,

and connections between the lever and such mechanism.

39. In an apparatus of the class specified,

the combination of a shaft, a gear carried on one end thereof, a diskattached to said gear and revolubly adjustable thereon, a leverfulcrumed in axial alinement with the gear and spaced apart therefrom, aseries of successively-operated members interposed between the disk andlever, coperating lugs between the disk and one of said members, betweeneach of said members andbetween one of said members and the lever, meansadjustably carried by the lever and adapted to be operated by the memberadjacent thereto to facilitate in changing the time of the operation ofthe lever clutch-controlled mechanism for actuating the gear, andconnections between the lever and such mechanism.

40. In an apparatus of the class specified, the combination of a shaft,a gear carried on one end'thereof, a disk having a series of notchesaround its outer edge, means adapted to be passed through the notches ofthe disk and engaging said gear for adjustably connecting the disk tothe gear, a lever fulcrumed in axial alinement with the gear and spacedapart therefrom, a series of revoluble members interposed between theleverv and the disk, each of which is provided with external andinternal lugs, the external lugs of one member adapted to engage theinternal lug of its adjacent member for imparting movement thereto,means secured to the disk for operating the member adjacent thereto,means for operating said lever from one of said members,clutch-controlled mechanism for actuating said gear, and connectionsbetween the lever and such mechanism.

41. In an apparatus of the class specified, the combination of a shaft,a gear carried on one end thereof, a disk attached to said gear andrevolubly adjustable thereon, a lever fulcrumed in axial alinement withthe gear and spaced apart therefrom, a series of revoluble membersinterposed between the lever and the disk, each vof which is providedwith external and internal lugs, the external lugs of one member adaptedtol engage the internal lug of its adjacent member for impartingmovement thereto, a lug on the disk adapted to engage with the internallug of the member adjacent thereto, an internal lug on the lever adaptedto be engaged by the external lug 0f the member adjacent thereto,clutch-controlled mechanism for actuating said gear, and connectionsbetween the lever and such mechanism.

42. ln an apparatus of the class specified, the combination of a shaft,a gear carried on `one end thereof, a disk attached to said gear,

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a lever fulcrumed in axial alinement with the gear and spaced aparttherefrom, a series of revoluble members inter osed between the leverand the disk, eac of which is provided with external and internal lugs,the external lug of one member adapted to engage the internal lug of itsadjacent member for imparting movement thereto, a lug on the diskadapted to engage with the internal lug on the member adjacent thereto,an internal lug on the lever adapted to be engaged by the external lugon the member adjacent thereto, a tooth carried bysaid last-mentionedmember, a plate adjustably carried by the lever, having an engagingpart, adapted to be engaged by the tooth aforesaid to facilitate inadvancing the time of operation of said lever, clutch-controlledmechanism for actuating the gear, and connections between the lever andclutch mechanism.

43. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end of a wagon, clutch-controlled mechanism forelevating and lowering said device, a manually-operated lever connectedwith such mechanism for governing the same, a series ofsuccessively-actuated members in operative connection with each otherand with the elevating and lowering mechanism adapted to govern theactuation of said lever, connections between one of said members and thelever, and means adjustably carried by said lever and adapted to beengaged by one of said members for advancing the operation of the leveraforesaid.

44. In a grain-dump lifting-j ack, the combination with an elevatingdevice for the front end of a wagon, a drum-shaft, a gear on one endthereof, connections between the drum-shaft and elevating device, aclutchshaft and clutch thereon, gearing interposed between theclutch-shaft and the gear of the drum-shaft, a lever fulcrumed on thedrumshaft, connections between the lever and the clutch aforesaid, and aseries of members interposed on the drum-shaft between the gear thereofand lever and operatively connected with the lever and gear, saidmembers adapted to be successively operated by said gear, forautomatically shifting said lever at predetermined intervals.

45. In a grain-dump lifting-jack, the combination with an elevatingdevice for the front end of a wagon, a drum-shaft and connectionsbetween the same and said elevating device, a gear on one end of theshaft, a clutch-shaft, a Worm-shaft, connections between the worm-shaftand gear on the drumshaft, a bevel-gear on the upper end of theworm-shaft, a miter-gear also on said shaft and within the bevel-gear, amiter-gear and bevel-pinion loosely carried on the clutchshaft and inmesh with the miter and bevel gears on the worm-shaft, a clutch partrotatable with and feathered on the clutch-shaft, a lever connected withthe clutch part for controlling the connection of the clutch part withthe gears on the clutch-shaft, and a series of successively actuatedmeans in operative connection with the gear on the drumshaft, one ofwhich is adapted to automatically operate said lever for moving theclutch part aforesaid.

In testimony whereof I aflix my signature in presence of two witnesses vCfr-As. W. LA PORTE, ROBERT N. MoCoRMIcK.

